[gdal-dev] Re: cropping a tif with lat/lon

[spalt]

That's a great resource, thx!  I think what I'm missing in order to do the
collar thing is a polygon from the FAA that goes around the actual map
portion of the image.  I've scoured the FAA site and its just not there. 
(They have a set of DVD's that contain this same map data that you need to
pay $$$ for to so my suspicion is its there..)

Anyway, what I've been doing is opening each map in QGPS, manually pointing
to the corners and recording them in a database.  Kind of a pain but the
area plotted in the maps doesn't change much so I will only need to do it
once.  Then I can quickly process the whole set without any trouble.

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